I went looking for a type pressure gauge a few days back and ended up getting the Michelin. It cost twice what i wanted to spend but it's pretty sweet. I basically only got it because I had run out of time and Peter Stevens only had that and a $5 pen job... I was thinking about starting a little stall down near all the bikes after work. I'd charge people 50c to check their tyres with my fancy digital gadget and recuperate some of the cost.